Note: Descriptions are shown in the official language in which they were submitted.
CA 02951134 2016-12-02
WO 2015/187846 PCT/US2015/034011
CONVEYOR CHAIN
RELATED APPLICATIONS
[0001] This application claims priority to U.S. Provisional Patent
Application No.
62/008,266 filed on June 5, 2014, the entire contents of which are
incorporated herein by
reference.
BACKGROUND OF THE INVENTION
[0002] The present invention relates to conveyor systems. More
particularly, the invention
relates to table top, or flat top type conveyors for supporting and moving
objects.
[0003] Current table top chain designs are limited by the strength of
molded base links or a
fabricated roller base chain. Such table top chains are susceptible to joint
wear and elongation
during use. Additionally, these systems are often used in an unnatural
condition where they are
forces through spirals, sideways deflection, or side-bow. These systems also
have issues with
pin retention in stamped and molded sidebars.
[0004] A solution is needed that provides a table top style conveyor that
is flexible,
eliminated hinge wear, travels easily through dynamic conveyor systems, and is
easily scalable
for different applications.
SUMMARY OF THE INVENTION
[0005] One embodiment of the present invention provides a conveyor chain
including a
continuous cord arranged to be driven and to bear a load applied to the
conveyor chain, a cord
coupler secured to the cord, and a module including a top plate and a module
coupler. The
module coupler engages the cord coupler such that the module is secured to the
cord.
1
CA 02951134 2016-12-02
WO 2015/187846 PCT/US2015/034011
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] Fig. 1 is a schematic representation of a conveyor chain according
to the invention.
[0007] Fig. 2a is a pictorial view of a conveyor chain according to one
embodiment of the
invention.
[0008] Fig. 2b is an exploded view of the conveyor chain of Fig. 2a.
[0009] Fig. 2c is a front view of the conveyor chain of Fig. 2a.
[0010] Fig. 2d is a side view of the conveyor chain of Fig. 2a.
[0011] Fig. 2e is a rear view of the conveyor chain of Fig. 2a.
[0012] Fig. 3a is a pictorial view of a conveyor chain according to another
embodiment of
the invention.
[0013] Fig. 3b is an exploded view of the conveyor chain of Fig. 3a.
[0014] Fig. 3c is a front view of the conveyor chain of Fig. 3a.
[0015] Fig. 3d is a side view of the conveyor chain of Fig. 3a.
[0016] Fig. 3e is a section view of the conveyor chain of Fig. 3a taken
along line 3e-3e of
Fig. 3d.
[0017] Fig. 4a is a pictorial view of a conveyor chain according to another
embodiment of
the invention.
[0018] Fig. 4b is an exploded view of the conveyor chain of Fig. 4a.
[0019] Fig. 4c is a front view of the conveyor chain of Fig. 4a.
[0020] Fig. 4d is a side view of the conveyor chain of Fig. 4a.
[0021] Fig. 4e is a section view of the conveyor chain of Fig. 4a taken
along line 4e-4e of
Fig. 4d.
2
CA 02951134 2016-12-02
WO 2015/187846 PCT/US2015/034011
[0022] Fig. 5 is a pictorial view of a conveyor chain according to another
embodiment of the
invention.
[0023] Fig. 6 is a pictorial view of the conveyor chain of Fig. 5.
[0024] Fig. 7 is a pictorial view of a conveyor chain according to another
embodiment of the
invention.
[0025] Fig. 8 is a pictorial view of a conveyor chain according to another
embodiment of the
invention.
[0026] Fig. 9 is a pictorial view of a conveyor chain according to another
embodiment of the
invention.
[0027] Fig. 10 is a pictorial view of a conveyor chain according to another
embodiment of
the invention.
[0028] Fig. 11 is a pictorial view of a conveyor chain according to another
embodiment of
the invention.
[0029] Fig. 12 is a pictorial view of a conveyor chain according to another
embodiment of
the invention.
[0030] Fig. 13 is an exploded view of the conveyor chain of Fig. 12.
[0031] Fig. 14 is a pictorial view of a conveyor chain according to another
embodiment of
the invention.
[0032] Fig. 15 is a pictorial view of a conveyor chain according to another
embodiment of
the invention.
[0033] Fig. 16 is a pictorial view of a conveyor chain according to another
embodiment of
the invention.
3
CA 02951134 2016-12-02
WO 2015/187846 PCT/US2015/034011
[0034] Fig. 17 is a pictorial view of a conveyor chain according to another
embodiment of
the invention.
[0035] Fig. 18 is a pictorial view of a conveyor chain according to another
embodiment of
the invention.
[0036] Fig. 19 is a pictorial view of a conveyor chain according to another
embodiment of
the invention.
[0037] Fig. 20 is a pictorial view of a conveyor chain according to another
embodiment of
the invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0038] Fig. 1 shows a conveyor chain 10 that includes a cord 14, a cord
coupler 18, and a
module 22. The cord coupler 18 is coupled to the cord 14, and the module 22 is
coupled to the
cord coupler 18 such that the cord 14 bears the load applied by a conveyor
system and the
module 22 is pulled along with the cord 14 while supporting an object.
Description of the
conveyor chain 10 will be directed to a single cord coupler 18 and a single
module 22 positioned
on the cord 14. Those skilled in the art will recognize that a plurality of
module couplers 18 and
modules 22 would be arranged along the cord 14 to form a functions conveyor
chain 10.
[0039] The cord 14 extends along an axis A and may be formed of wire,
synthetic rope, or
another suitable cordage, as desired. The cord is arranged to be driven by a
conveyor system
such that the cord is the load carrying element of the conveyor chain 10. That
is to say, the load
of the conveyor system is not directed through the module 22. The cord 14 is
configured to
provide flexibility in substantially three-hundred-sixty degrees (360 ) about
the axis A. The
flexibility of the cord 14 overcomes many of the short fallings of current
systems. Namely, the
4
CA 02951134 2016-12-02
WO 2015/187846 PCT/US2015/034011
cord 14 allows for easy travel of the conveyor chain 10 around the conveyor
system while
eliminating hinge wear and strain issues caused by flexing. Further, the cord
14 is easily scalable
to account for the required load that will be required of the conveyor chain
10. The cord 14 may
be scaled independent of the module 22 such that the conveyor chain 10 as a
whole is more
adaptable than current systems.
[0040] The cord coupler 18 is rigidly coupled to the cord 14. In some
embodiments, the cord
coupler 18 is molded to the cord 14, formed with the cord 14, entwined with
the cord 14, or
fastened to the cord 14. The manner of attachment of the cord coupler 18 to
the cord 14 is not
limiting beyond the feature of the cord coupler 18 being rigidly coupled with
the cord 14 for
movement along the axis A with the cord 14 around the conveyor system. As will
be discussed
below with reference to Figs. 2-20, the cord coupler 18 may take many
different forms, shapes,
and attributes. No matter the specific design of the cord coupler 18, the
purpose is to transfer
force from the load carrying cord 14 to the module 22 such that the module 22
is moved along
the conveyor system with the movement of the cord 14 and the cord coupler 18.
[0041] The module 22 includes a support surface in the form of a top plate
26 and a module
coupler 30 coupled to the top plate 26 and arranged to engage the cord coupler
18. As discussed
below with reference to Figs. 2-20, the top plate 26 and the module coupler 30
may have many
different arrangements designed to perform specific tasks. Generally, the top
plate 26 is intended
to support an object for conveyance along the conveyor system and the module
coupler 30 is
intended to transfer force from the cord coupler 18 to the module 22 such that
the entire module
22 moves along with the cord 14 during operation of the conveyor chain 10. In
this way, the
module 22 serves to support the object, while the cord 14 bears the load of
conveying the module
22 and the object along a conveyor path. Again, as mentioned above, this
allows the conveyor
CA 02951134 2016-12-02
WO 2015/187846 PCT/US2015/034011
chain 10 to be scaled to a specific task, provide flexibility in conveyance
path, and avoid wear to
individual modules. An added benefit of the modules 22 is that the module
coupler 30 allows
each individual module 22 to be removed from the cord 14 without affecting
adjacent modules
22. In some embodiments, the module coupler 30 may be eliminated and the top
plate 26 may be
directly connected to the cord coupler 18.
[0042] The following description will include brief descriptions of each of
the embodiments
illustrated in Figs. 2-20. Each embodiment will be identified with a different
one-hundred series
number set. for example, Fig. 2 will include a conveyor chain 110, a cord 114,
a cord coupler
118, and a module 122. Fig. 3 will refer to a conveyor chain 210, et cetera.
More embodiments
than are shown herein are contemplated within the scope of the invention.
[0043] Figs. 2a-e show a conveyor chain 110 wherein the cord coupler 118
defines three
toroidal projections 134 that extend from the cord 114. The module 122
includes two arms 138
that project from the top plate 126 and include apertures 142. The module
coupler 130 includes
a detachable clamp 146 sized to receive the cord coupler 118 and allow the
cord 114 to pass
therethrough. The clamp 146 defines projections 150 sized to engage the
apertures 142 of the
arms 138. Fig. 2a shows the conveyor chain 110 assembled such that an object
may be
supported by the top plate 126, and the cord 114 acts as the load bearing
member transferring
force to the top plate trough the cord coupler 118 and the module coupler 130.
[0044] Figs. 3a-e show a conveyor chain 210 similar to the conveyor chain
110 but with a
different shaped top plate 226 and a different shaped clamp 246.
[0045] Figs. 4a-e show a conveyor chain 310 wherein the top plate 326 is
substantially the
same as shown in Figs. 3a-e, but wherein the cord coupler 318 defines angled
apertures 354 and
lower paddles 358. The module 322 includes arms 338 that extend from the top
plate 326 but
6
CA 02951134 2016-12-02
WO 2015/187846 PCT/US2015/034011
does not include a clamp or a module coupler. Instead, pins (not shown) extend
through the
angled apertures 354 and are secured to the apertures 342 formed in the arms
338. The angled
apertures 354 allow the module 322 to rotate about the axis A while not
transferring torque to the
cord 314. The paddles 358 may be engaged by sprockets or other mechanisms of
the conveyor
system, as desired.
[0046] Figs. 5 and 6 show a conveyor chain 410 wherein the cord 414 is a
hollow tube. The
cord coupler 418 defines recesses 462 that are engaged by arms 438 extending
form the top plate
426 to hold the module 422 to the cord 414.
[0047] Fig. 7 shows a conveyor chain 510 that is similar to the conveyor
chain 410 described
above passing through a conveyor system. Also shown in Fig. 7 is one
embodiment of a cord
joint 566 that joins two loose ends of the cord 514 into a continuous loop.
[0048] Fig. 8 shows a conveyor chain 610 wherein the recess 662 is formed
in a more
vertical arrangement (as viewed in Fig. 8) that the recesses shown in Figs. 5-
7. Additionally, the
cord joint 666 is arranged differently than the joint 566 to accommodate the
module coupler 530
arranged to engage the vertical recesses 666.
[0049] Fig. 9 shows a conveyor chain 710 wherein the cord coupler 718
defines projections
770 arranged to engage the apertures 742 formed in the arms 738, and further
defines guides 774.
[0050] Fig. 10 shows a cord coupler 818 (with the cord 814 and the top
plate 826 removed
for clarity) that defines three toriodal projections 834, and a transverse
projection 878 extending
from the top plate 726 and arranged to be received between the toroidal
projections 834 and
engage the cord (not shown).
7
CA 02951134 2016-12-02
WO 2015/187846 PCT/US2015/034011
[0051] Fig. 11 shows a conveyor chain 910 mounted in a conveyor assembly.
The cord
coupler 918 defines a substantially cylindrical shape, and the transverse
projections 978 are
arranged to engage front and rear sides of the cord coupler 918 while grasping
the cord 914.
[0052] Figs. 12 and 13 show a conveyor chain 1010 (with the cord 1014
removed for clarity)
wherein the module coupler 1030 includes a clamp 1046 that defines apertures
1082 sized to
engage projections 1086 formed on the arms 1038. The cord coupler 1018
includes guides 1074
arranged to aid the conveyor chain 1010 as it moves along the conveyor
assembly. The clamp
1046 is configured to engage the cord coupler 1018 between the guides 1074.
[0053] Fig. 14 shows a conveyor chain 1110 (with the cord 1114 removed for
clarity) that is
similar to the conveyor chain 1010 shown in Figs. 12 and 13 wherein the cord
coupler 1118 does
not include guides.
[0054] Fig. 15 shows a conveyor chain 1210 (with the cord 1214 removed for
clarity) that is
similar to the conveyor chain 1110 shown in Fig. 14 wherein the module coupler
1230 includes
two clamps 1246a and 1246b.
[0055] Fig. 16 shows a conveyor chain 1310 (with the cord 1314 removed for
clarity)
wherein the transverse plate 1378 includes apertures 1390 arranged to receive
projections 1370
formed on the cord coupler 1318. Side rollers 1394 are rotatably mounted to
the cord coupler
1318 and positioned to engage a guide rail of the conveyor system. This
embodiment
demonstrates how the inventive system provides side-flexing advantages over
current conveyor
chain systems.
[0056] Fig. 17 shows a conveyer chain 1410 similar to the conveyor chain
1310 shown in
Fig. 16 wherein the side rollers 1394 are eliminated.
8
CA 02951134 2016-12-02
WO 2015/187846 PCT/US2015/034011
[0057] Fig. 18 shows a conveyor chain 1510 that includes a clamp 1546
arranged to capture
the cord coupler 1518, two side rollers 1594, and directly engage the top
plate 1526 to secure the
module 1522 to the cord 1514.
[0058] Fig. 19 shows a conveyor chain 1610 wherein the cord coupler 1618 is
received in a
cavity 1698 recessed into the top plate 1626. The clamp 1646 covers the cavity
1698 and locks
the cord coupler 1618 in place.
[0059] Fig. 20 shows a conveyor chain 1710 wherein the clamp 1746 directly
engages a
bottom side of the top plate 1726 and secures the module to the cord coupler
1718.
[0060] While there has been shown and described what are at present
considered the
preferred embodiments of the invention, it will be obvious to those skilled in
the art that various
changes and modifications can be made therein without departing from the scope
of the
invention defined by the appended claims. For example, the individual features
described in the
drawings may include one or more features from another embodiment.
9
